Improvement in machines for cutting paper, envelopes



2 SheetsSh eat 1.

E. J. FROST. MACHINE FOR CUTTING PAPER, ENVELOPES, &c.

- Patented. July 24,1877.

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2S11eets-Sheet2 E. J. FROST.

MACHINE FOR CUTTING PAPER, ENVELOPES, 84c.

No. 193,327. Patentgd July 24,1877.

0 S, A I u S I K g x A I '1 V i I Q) I I N/ G! 'I v P 1! I L n. e:

N\ II II x I I I I S llllllllllll II EDWARD J. FROST, OF PHILADELPHIA,PENNSYLVANIA.

IMPROVEMENT lN MACHINES FOR CUTTING PAPER. ENVELOPES. &C.

Specification forming part of Letters Patent 0. 193,327, dated July 24,1877 application filed November 20, 1876. e

To all whom it may concern:

Be it known that I, EDWARD J. FROST,

' of the city and county of Philadelphia, and

State of Pennsylvania, have invented a new and useful Improvement inMachines for Outting Paper, Envelopes, Collars, Boxes, & c.; and I dohereby declare the following to be a clear and exact description of thenature thereof, sufiicient to enable others skilled in tions of sectionsof the feeding-drum. Fig.

dis a diametrical section of the feedingdrum. Fig. 7 is a side elevationof the cutters, operating wheel, and arm. Fig. Sis a side elevation of acam that prevents return of the sheet toward the reel. Fig. 9 is a topview of the take-up of the slack of the sheet. Fig. 10 is a longitudinalsection of a portion in line a; m, Fig. 3. 7

Similar letters of reference indicate correponding parts in the severalfigures.

My invention consists of mechanism for starting the feed, orpreparatively unrolling the sheet from the reel in advance of thecutting operation.

It also consists of means for taking up the slack of the sheet from thereel.

It also consists of a continuously-rotating drum, feeding at intervals,and rendered adjustable to the required length of the sheet or strip tobe cut.

It also consists of cams for automatically preventing the return of thesheet toward the reel.

It also consists of a cutter having a positive motion and operating witha draw-cut.

It also consists of a stripper for preventing the rising of the uncutsheet.

Referring to the drawings, A represents a frame mounted on suitable legsor feet, and supporting the working parts of a machine. B represents ashaft carrying pinions, which,

the counterpart of whichis blades or cutting-' edges on the table J, andat the opposite side having journals a, whereby said cutter will have anaxial motion. In order to impart motion to the cutter there is attachedto the head at each side, opposite to the axis, an arm,

K, each of whose lower ends carries a wristpin or roller, which engageswith a cam-groove on the inner face of the gear-wheel C, which receivespower from the shaft B, as has been stated. I

Above the table J, at the side opposite to the cutter, there is mounteda shaft, L, from which are suspended gravitating or springpressed feetor cams M, whose lower faces are adapted to come in contact with thetable J, and be stopped thereby in the direction from the drum Gr, butthey have free motions toward the drum. Adjacent to the cams there aresecured to the frame A, guiding-rollers N, and below the same is a reel,P, on which will be rolled the sheet to be cut. On the shaft of the'reel there is secured a ratchet, It, with which engages a pawl, R,suspended from an arm, R, of a collar, S,loosely fitted on said shaft,said collar receiving reciprocating rotary motion by means of anoscillating arm, S, to which power will be communicated from the shaftof the drum H or other movable portion of the machinc. Below the shaftof the reel there is mounted a gravitating frame or arm, T, whichextends inwardly, and hasat the end opposite to its axis a series ofguiderollers, T. The downward motion of the frame 1 is limited by stopsdprojecting from the adjacent portion of the supports of the frame A. v

The drum G is made of parallel sections G G,- and a portion of theperiphery of each section is raised above the remaining portion.

The inner section G is movable on the shaft F, to which it is fitted,and provided with a curved slot, 6, extending between the periphery andcenter, and through the same is passed a screw-bolt, V, which alsdpasses through the side sections G, whereby the central section may beadjustably moved and afterward securely held to the side sections, andthe several sections rotate as one.

Above the table J and between the drum G and cutter J there is aspring-plate, W, which extends horizontally above said table, with anintervening space, through which the sheet to be cut will be passed, andafter the out has been made said plate acts as a stripper for preventingthe rising of the uncut portion of the sheet.

The operation is as follows The sheet which has been rolled or wound onthe reel P is first passed under the guide-rollers T of thegravitating-arm T, then over the rollers N and between the cams M andtable J to the feed-rollers G H. Power being applied to the shaft B, themachine will be set in motion, the cutter being in its lowest position.The pawl It rides loosely over the ratchet R in one direction, andengages with the teeth thereof in the return direction, whereby in thelatter case, a length of the sheet will be nnrolled. The cutter nowascends; the forward end of the sheet, forced in between the rollers GH, so as to be caught by them, will be carried forward and directedbetween the table J and spring-plate W to a proper position under thecutter, which then descends and cuts or shapes the sheet as required ornecessary. Meanwhile the reel continues to rotate intermittingly, andunwinds a sufficient length of the sheet for the next cutting operation.

It must here be noticed that the raised surfaces of the drum G, aided bythe drum H, carry forward the sheet to the cutter; but as soon as theunraised surface thereof arrives at the portion of the sheet which restson the lower drum, and said unraised surface does not rotate in contactwith the sheet, it is evident that the sheet has a rest. or dwell atintervals, and this occurs during the cutting operation, the drum andthe cutter being adjusted relatively to each other. After the as; centofthe cutter the raised surfaces of the drum again take hold of the sheetand advance it to the cutter, after which the rest or dwell of the sheetoccurs then the cutter descends, and the several operations are repeatedas long as requisite or desirable.

In order to increase or decrease the length of the sheet fed to thecutter, the screw V of the drum G will be loosened, and the middlesection G moved on the shaft Fin one direction, so as to shift the pointof com meneement of the raised surface of said middle sec tion fartherfrom the point of commencement of the raised surfaces of the sidesections G, whereby there will be a greater continuous length of theraised surfaces of the entire drum G, and consequently a greater lengthof sheet fed tothe cutter. But by moving the middle section in theopposite direction, the continuous length of the raised surfaces of theentire drum will be shortened, whereby I erly taut during the feedingoperation, and

if the length of the sheet unrolled is in excess of requirement oradjustment of the feed and cutter, the frame will fall and take up theslack.

The cams M automatically hold the sheet in the direction toward the reeland prevent its return thereto; but the forward motion of the sheet isnot interfered with by the cams, as the latter liberate vthemselves bythe said forward motion.

As the cutter-head has an axial motion,

.ter, and at another portion a quick descent thereof, whereby there is arapid and clean cut, and then a quick ascent, whereby the cutter is inposition for permitting immediate advance of the sheet to full extentthereunder.

In order to cause the arms K that are connected to the cutter-head tomake their motions steady and uniform, they have pivoted to them rockingarms K, whose axes are on the sides of the frame A.

Having described my invention, whatI claim as new, and desire to secureby Letters Patent, is-- 1. The paper-carrying reel of a paper-cuttingmachine positively rotated to unroll the sheet in advance of the cuttingoperation, substantially in the manner and by the pawl-andratchetmechanism described.

2. The reel and drums G H, in combination with the automatic take-upmechanism T T d, substantially as shown and described.

3. The feed-drum G, constructed of sections G G G each having a portionof its periphery raised, and one of such sections, G, having a slot, e,and the other sections, G, having bolt-holes, through which and the slot0 a bolt is passed to unite the three sections and cause them to act asone, the said slotted section permitting of the relative adjustments ofthe raised portions of the peripheries of said sections, substantiallyas and for the purpose specified.

4. The reel and feed-drum, in combination paper is fed to the cutter, incombination with with the cams M, substantially as and for the saidcutter, table J, and feed mechanism, subpurpose set forth. stantially asdescribed.

5. The cutter J, in combination with arms E. J. FROST. K, cam-groovedgear 0, and table J, sub- Witnesses: stantially as shown and. described.JOHN A. WIEDERSHEIM,

6. The stripper-plate W, under which the A. P. GRANT.

